Trying to improve backup performance.

Given:

Server:  V3R1L2.9 on VM/ESA V2R2

Client:  Win-NT 4.x SP 5 with TSM V4R2.0.0

Things like journal and encryption will not work?
Or, I just haven't figured out how to make them work yet?
With Journal processing - if all work is done at client does server level
really matter?
Install on client and configuration appears to have gone well.

Thanks,

 Brad